Tehuantepec Forecast

July 31, 2026, 9:00 am (UTC: -04:00)
Subject: Tehuantepec Forecast

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This forecast has not been reviewed. It was generated from an automatic model.

.WARNINGS.

...TROPICAL STORM WARNING...
.TROPICAL STORM GENEVIEVE NEAR 21.7N 127.2W 993 MB AT 0900 UTC
JUL 31 MOVING WNW OR 290 DEG AT 12 KT. MAXIMUM SUSTAINED WINDS
55 KT GUSTS 65 KT. TROPICAL STORM FORCE WINDS WITHIN 100 NM N
SEMICIRCLE...90 NM SE QUADRANT AND 80 NM SW QUADRANT. SEAS 4 M
OR GREATER WITHIN 180 NM N SEMICIRCLE...90 NM SE QUADRANT AND
150 NM SW QUADRANT WITH SEAS TO 8.0 M. ELSEWHERE WITHIN 23N125W TO
24N126W TO 24N130W TO 22N130W TO 20N128W TO 20N124W TO 23N125W
WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER AREA WITHIN
30N123W TO 30N131W TO 27N140W TO 15N140W TO 16N128W TO 21N122W TO
30N123W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN MIXED SWELL.
.24 HOUR FORECAST TROPICAL STORM GENEVIEVE NEAR 23.1N 132.1W.
MAXIMUM SUSTAINED WINDS 45 KT GUSTS 55 KT. TROPICAL STORM FORCE
WINDS WITHIN 80 NM N SEMICIRCLE...50 NM SE QUADRANT AND 40 NM SW
QUADRANT. SEAS 4 M OR GREATER WITHIN 150 NM N SEMICIRCLE...75 NM
SE QUADRANT AND 90 NM SW QUADRANT WITH SEAS TO 6.5 M. ELSEWHERE
WITHIN 25N130W TO 27N134W TO 25N137W TO 22N134W TO 22N130W TO
25N130W WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0 M. REMAINDER AREA
WITHIN 25N127W TO 29N131W TO 28N140W TO 20N140W TO 18N135W TO
20N130W TO 25N127W WINDS 20 KT OR LESS. SEAS 2.5 TO 3.0 M IN
MIXED SWELL.
.48 HOUR FORECAST TROPICAL STORM GENEVIEVE NEAR 24.7N 137.9W.
MAXIMUM SUSTAINED WINDS 40 KT GUSTS 50 KT. TROPICAL STORM FORCE
WINDS WITHIN 30 NM S SEMICIRCLE...70 NM NE QUADRANT AND 60 NM NW
QUADRANT. SEAS 4 M OR GREATER WITHIN 120 NM N SEMICIRCLE...60 NM
SE QUADRANT AND 90 NM SW QUADRANT WITH SEAS TO 5.5 M. ELSEWHERE
OVER FORECAST WATERS WITHIN 28N136W TO 28N140W TO 24N140W TO
24N137W TO 25N135W TO 28N136W WINDS 20 TO 33 KT. SEAS 3.0 TO 4.0
M. REMAINDER AREA WITHIN 30N135W TO 30N140W TO 20N140W TO 24N137W
TO 20N138W TO 25N133W TO 30N135W WINDS 20 KT OR LESS. SEAS 2.5
TO 3.0 M IN MIXED SWELL.

.WITHIN 16N94W TO 16N95W TO 16N96W TO 15N96W TO 15N95W TO 15N94W
TO 16N94W...INCLUDING THE GULF OF TEHUANTEPEC... NW TO N WINDS
20 TO 25 KT. SEAS LESS THAN 2.5 M.
.12 HOUR FORECAST CONDITIONS IMPROVE. WINDS 20 KT OR LESS. SEAS
LESS THAN 2.5 M.

MODERATE TO FRESH N GAP WINDS ARE IN THE GULF OF TEHUANTEPEC.
ELSEWHERE, MODERATE OR WEAKER WINDS PREVAIL. SEAS ARE SLIGHT IN
THE GULF OF CALIFORNIA AND MODERATE IN THE REMAINING OFFSHORE
WATERS.
FOR THE FORECAST, FRESH TO LOCALLY STRONG GAP IN THE GULF OF
TEHUANTEPEC WILL DIMINISH TODAY. MODERATE TO LOCALLY FRESH NW
WINDS ARE EXPECTED TO PULSE TONIGHT NEARSHORE BAJA CALIFORNIA.
FRESH SE TO S WINDS MAY PULSE NIGHTLY IN THE NORTHERN GULF OF
CALIFORNIA, POSSIBLY REACHING STRONG SPEEDS SAT NIGHT. NW SWELL
MAY LEAD TO ROUGH SEAS OFFSHORE BAJA CALIFORNIA NORTE SUN NIGHT
AND MON.

SHORT-TERM TEHUANTEPEC
TODAY - N 14-18, Seas N/A ?-? ft @ ?
TONITE - SW 2-3, Seas N/A ?-? ft @ ?
SATURDAY - NNE 6-8, Seas N/A ?-? ft @ ?
SATURDAY NIGHT - W 7-9, Seas N/A ?-? ft @ ?

LONG-TERM TEHUANTEPEC
SUNDAY - WNW 9-11, Seas N/A ?-? ft @ ?
MONDAY - SW 5-6, Seas N/A ?-? ft @ ?
TUESDAY - SSW 4-5, Seas N/A ?-? ft @ ?
WEDNESDAY - SSW 4-5, Seas N/A ?-? ft @ ?
THURSDAY - NNW 11-14, Seas N/A ?-? ft @ ?